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251581 Optical Smoke Alarm
The optical smoke alarms are powered by 230V AC directly from the mains and they also have 9V alkaline batteries as a backup in case of mains failure. These smoke alarms generates 85dB pressure sound.
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Panoramica
The optical smoke alarms are powered by 230V AC directly from the mains and they also have 9V alkaline batteries as a backup in case of mains failure. These smoke alarms generates 85dB pressure sound.
